Results obtained from 27 infants ranging in age from 10 to 12 weeks indicated that infants develop expectancies regarding how stimuli occurring in particular contexts should behave based on their prior experiences with these stimuli. (Author/RH)

Sixty-five infants (mean age of 111 days) who failed to complete a two-day operant-conditioning task were compared with a stratified random sample of those who did on measures of infant temperament and several demographic characteristics. A discriminant-function analysis was performed. (Author/BN)

To find predictive relations between measures taken in infancy and later scores on intelligence tests, a study was made that measured in the infant those cognitive processes examined later in life. Operant conditioning tasks were employed which required 3-, 7-, and 11-month-old infants to execute some response to produce an environmental…

The influence of negative affect on the retrieval of information from memory during infancy was investigated in two studies through the use of an operant conditioning paradigm. The procedure used, known as "mobile conjugate reinforcement," involves a free operant task in which an infant is reinforced for footkicking by the movement of an…